Plain Lid: Lid-P36-36inch-Plain-Lid.pdf Lid-P36x20PLHole – 36” Plain Lid with 20” Riser & Lid Sanitary Lid: Lid-S36-36inch-Sanitary-Lid.pdf Lid-S36x20PLHole – 36” Sanitary Lid with 20” Riser & Lid All Lids Manucatured by Bode's LIDS Well, Septic, Plain & Riser Lids.pdf